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Multi-dimensional jaw virtual-real registration error detection device and method based on augmented reality

An augmented reality and registration error technology, applied in the field of medical equipment, can solve the problems of virtual and real image registration error, complex anatomical structure of the jaw model, and inability to measure accurately, so as to reduce the actual registration error, simple structure, and versatility Good results

Pending Publication Date: 2021-10-01
THE FIRST AFFILIATED HOSPITAL OF FUJIAN MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a device and method for detecting virtual and real registration errors of multi-dimensional jaws based on augmented reality. The problem that quasi-error cannot be precisely measured

Method used

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  • Multi-dimensional jaw virtual-real registration error detection device and method based on augmented reality
  • Multi-dimensional jaw virtual-real registration error detection device and method based on augmented reality
  • Multi-dimensional jaw virtual-real registration error detection device and method based on augmented reality

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Embodiment

[0064] In this example, the operation process is divided into three parts, which are the fixation of the rapid prototyping model, the creation of the augmented reality scene, and the detection of multi-dimensional virtual-real registration errors, as follows:

[0065] S1: The process of fixing the rapid prototyping model. Import the acquired Dicom medical image data of the patient's jaw into the medical image processing software, and create the required virtual model data by setting the threshold range according to the different thresholds of different tissues in the CT image. The threshold of human jaw is selected from 555-1800, the threshold of teeth is selected from 1200-3071, and the threshold of tumor is selected from 65-110. The tumor, jaw and soft tissue were then separated by region growing and masking functions. Output the stl file and import the stl file into the 3D model making software to establish a unified coordinate system to form a complete jaw model, add the m...

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Abstract

The invention provides a multi-dimensional jaw virtual-real registration error detection device and method based on augmented reality. The detection device is a polygonal boss on which a jaw model can be placed; a platform at the top of the boss is connected with a jaw model fixing structure for placing the jaw model; the platform is provided with a fixing piece for fixing the jaw model; plane reference mark points are uniformly distributed on the top surface and the axial surface of the boss; and the plane reference mark points are matched with measurement operation of a three-coordinate measuring instrument on the detection device. The device is simple in structure, convenient to use and good in universality, and effectively solves the problem that virtual-real image registration errors cannot be accurately measured due to the complex anatomical structure of a jaw model in the prior art.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a device and method for detecting registration errors of multi-dimensional virtual and real jaws based on augmented reality. Background technique [0002] Oral and maxillofacial tumors are a common disease that seriously affects human health and quality of life. Surgical resection is the main treatment for oral and maxillofacial tumors involving the jaw. In recent years, the application research of using augmented reality technology to assist oral and maxillofacial surgery has gradually become a hot spot. However, accurate detection of registration errors in augmented reality images becomes a thorny problem. Due to the lack of professional testing equipment, it is inevitable that there will be errors in the detection of augmented reality image registration errors with some simple means such as drawings and conventional testing instruments. Especially for the identificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T7/33G06T7/13G06T19/00A61B6/14A61B6/51
CPCG06T17/00G06T7/33G06T7/13G06T19/006G06T2207/10012G06T2207/30008A61B6/51
Inventor 施斌刘少锋廖云阳戴博文邹耿森杜晨
Owner THE FIRST AFFILIATED HOSPITAL OF FUJIAN MEDICAL UNIV